At a Glance
- Birthday
- May 21
- Sun Sign
- Gemini
- Approx. Degree
- 1° Gemini
- Sabian Symbol
- “A glass-bottomed boat reveals undersea wonders.”
- Jones Keyword
- Curiosity
Your Sun Sign on May 21
A May 21 birthday places your Sun in Gemini, an air sign ruled by Mercury. But your sign is only the broad stroke — within Gemini, your Sun sits at one specific degree, and that single degree carries its own Sabian image.
Note: May 21 sits close to a sign boundary, so depending on your exact birth year and time your Sun may fall in the neighbouring sign or degree. The figure above is representative — run your birthday through the calculator for your exact degree.
The Image at Your Degree
For May 21, that degree is about 1° Gemini, and its Sabian Symbol is “A glass-bottomed boat reveals undersea wonders.” This is one of 360 images received clairvoyantly in 1925 — a concrete scene rather than an abstract trait. Read the full meaning, gift and shadow, and chart placement on the 1° Gemini Sabian Symbol page.
Born May 21? See the exact image at your Sun’s degree free. No account.
Start free →- Sun, Moon & Ascendant — three images, not one
- The pattern that runs across all three placements
- A written action plan, mapped to your chart
- Saved as a link for 7 days · download as PDF
- A 12-month forecast from your real transits
- ~25 key moments, each mapped to its Sabian image
- Organized by quarter, with one throughline
Common Questions
What is the Sabian Symbol for someone born on May 21?
If you were born on May 21, your Sun is at approximately 1° Gemini, whose Sabian Symbol is “A glass-bottomed boat reveals undersea wonders.” Its Jones keyword is Curiosity. Your exact degree depends on your birth year and time.
What zodiac sign is May 21?
A birthday on May 21 usually falls under Gemini. This date is near a sign cusp, so the sign can vary by year — check your exact chart to be sure.
Why might my Sabian degree be different?
The Sun advances about one degree per day, and sign boundaries shift by a day or so each year. Your birth time also matters. Enter your birthday in the free calculator for the exact image at your Sun's degree.